Difference between optical drives in iFixit-Store?

A1286 2.66GHz 15" Unibody MacBook Pro (MB985LL-A)

Hi there,

my optical drive died over the last months - after reading discussions on several forums about cleaning the lens, I tried that, but now it rejects every disc (regardless whether CD-ROM or DVD) so I'm going to exchange it.

As it seems that the original Matshita UJ-868 isn't available anymore, I try to get a replacement here. Within the iFixit store, I found two drives which seem to fit:

The computer is actually a 1,66 GHz Core2Duo MacBook Pro 5,3 from Mid-2009 and not Mid-2010. While entering that question, I already noticed that iFixit's model codes seem to be somewhat inconsistent...

As the computer is nearly 2 years old, there's of course no warranty left and despite the fact that there's a huge number of drives dying, I guess Apple won't set up an extended guarantee programm. :-(

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